Originally posted by Urban Blackbear:

Or just swing when they're a few meters away. They'll fly right into your swing.

I do that when i have my gear. When im running back to get it. Ill use some backup weapon to kill the one ive seen. But while im running another might come from behind to cause instant death. Sound is not loud enough for me to hear until it appears in my monitor and i dont have time to dodge the initial charge.